A. difficulty in sleeping at night. B. strong desire to become a writer

　　C. wish to have a swim in the waters D. terrible swimming experience in the ocean.

　　26. The underlined part in the 3rd paragraph probably means the author ________.

　　A. regretted having quitted his job as a lawyer

　　B. was unhappy after giving up his job as a lawyer

　　C. was upset because he had to give up his job as a lawyer

　　D. was pretty happy when he quitted his job as a lawyer

　　27. The best title of the text might be _________.

　　A. Lawyer or Writer B. Change and Chance

　　C. Change and Regret D. Risk or Opportunity

　　C

　　As free as they make us, mobile phones still need to stay close to a power source. Soon that may change with "green" power.

　　Three Chilean students got the idea for a plant-powered device(装置) to charge their cellphones, while sitting in their school's outdoor courtyard during a break from exams, with dead mobile phones. Then, one of them had an "aha" moment.

　　"It occurred to Camila to say about plants," said inventor Evelyn Aravena, "'Why don't you have a socket, if there are so many plants? 'After that, we thought, 'why don't they have a charging outlet? Because there are so many plants and living things that have the potential to produce energy, why not?'"

　　Their invention-a small biological circuit called E-Kaia-uses the energy plants to produce during photosynthesis(光合作用). A plant uses only a small part of that energy and the rest goes into the soil, and that's where the E-Kaia collects it. The device plugs into the ground and then into your phone.

　　"It's the most amazing project I've ever seen in my life, plain and simple. They brought this original model, and it worked - and that's when it all changed, at least from my personal point of view and I began to support them." said Mauricio Cifuentes.

　　The device solved two problems for the engineering students - they needed an idea for a class project, and an outlet to plug in their phones.

　　"Looking for a place to charge the notebook, which had no power, and the mobile phones, we weren't able to find anything because all the other students were in the same state of madness trying to find a place to charge their devices," said Aravena.

　　But plants are everywhere, and the bio－circuit makes the best of their excess(过多的) power.

　　The E-Kaia doesn't carry much charge but it's powerful enough to completely recharge a mobile phone in less than two hours.

　　The student inventors have applied for patents on their technology, and expect the E-Kaia to go on sale soon.

　　28. How could the students get the "green" power idea?

　　A. By carrying out an experiment.

B. Just from an occasional thought.